Machine



July 5 1927. 1,635,125

H. HOFFMEISTER CALCULATING MACHINE Filed April 1. 1925 flew 7260272 oznyaisier Patented July 5, UNITED s'rA as .|.O arm, A CORPORATION 01'mm.

CALCULATING PATENT OFFICE.

. l or ennmaonz, nannnwmcx, 0mm, stem. ennnm, FATAL I t 00.,AK'IIINGESELLSOHAI'I, OF BBAUNSCHWEIG, GEE

A pnmiim fled April 1, 1m, Serial It. in", and in Germany April a, :4.

My invention relates to improvements in calculating machines, and moreparticularly in the construction of the mac ine frame, and the objectsof the improvements are to 6 provide a frame which can manufactured atlow cost, is light in wei ht, and requires little space so that .it is aapted to, accommodate a setting mechanism of large capacity. With-theseobjects in view. my inven- 10 tion consists in the novel machine framemade from a blank of sheet metal bent u wardly atopposite sides toprovide the si e walls of the casing. In the preferred form the saidsheet metal blank is made with a 16 straight portion disposed in frontof the body portion and the side walls thereof to provide means forsecuring thereto the ide members for the slide or carriage 0% machine.For the purpose of explaining the inven-. tion an example embodying thesame has been shown in the accompanying drawing, in which the same.reference characters have been used in all the views to indicate corres$5 sponding parts. In said drawing,

Fi 1, is an elevation of the frame look ing mm the front side of themachine,

ig. 2, is an end view lookin right in Fig. 1 and showing in a ditioncertain parts of the mechanism,

Fig. 3, is a plan view showing the sheet metal blank from which theframe is made, and

Fig, 4, is a detail view showing the mechanism for transmitting themovement of the carriage to the single tooth wheel. I

For the purpose of' explainin the inven-' tion I have shown the same emdied in a calculating machine as in Fig. 2 and comprisi a settingmechanism 1 adapted to be rotate from a machine crank 2 by means of gearwheels. One of said gear wheels as at 3; is secured to the shaft of themachine crank 2 and is ada ted .to rotate two revolutions counting mecanisms 7 and 8 through ar wheels 4, 5 6, which mechanisms count t enumber of the revolutions of the setting mechanism 1. Each single toothwheel 11 is longitudinally shiftable on the shaft 6, which upon rotationof the said sha'ft 0per ates the revolutions countin and 8 through the rw eels 9 and 10. Shiftin movement is imparted to the single toot wheel11 from the carriage or slide the y from the I mechanisms 7 (not-shown)having the registering mecha- I nism mounted thereon. As shown in Fig. 4the said carriage is provided with a rack 12 ada ted to shift a rack' 14through the me ium of a double toothed sector 13. The rack 14 is guidedon the base plate of the 00 machine, and it carries an arm 15straddlinthe single tooth wheel 11 with its'bifurcate top en Thus the said singletooth wheel 1S shifted into position for acting on the numeral wheel ofthe revolutions counting 66 mechanism corresponding to the lateraldisplacement of the slide.

The neral construction of the machine is known in the art, and I do notdeem it necessarly' to describe the same in detail;

-he frame of the machine .is made from a blank 0, of sheet metal such assteel, iron, aluminium or brass. The side walls b are provided bybending the lateral portions of the blank at right angles to'the body orbot- 75 tom f, and the feet are secured to the said bottom f.Preferably, the blank is formed with cut-out portions d located alongthe line of bending to enable'the operation to be readil performed.

In rout of the body portion f of the blank there is an offsetsubstantially rectangular portion g which ma project at one or bothsides beyond the y portion f, and which is separated at its ends fromthe body portion by notches or cut-out portions e rojecting inwardlybeyond the line on w ich the walls 6, b are bent. The said portion 9 7provides the base for the guide way of the slide of the machine. 00

' The blank is provided with suitable holes and cut-out portionsproviding bearings for sliafts, rods and other parts of the mecha nismof the machine. I

I claim:

1. A blank for foldi machine of the clas's escribed, the blank havingholes to afford bearings for machine parts and spaced rows of openings,said rows of openings being arranged along fold lines 100 for endportions thereof which constitute sides of the frame when joined, theblank having a portion disposed at an angle to said rows to constitute abase for another machine part, the blank being notched at the junctionof said portion with the remainder of the blank and in line with bothrows of op g 05 into a frame for a 2, A blank for folding into a framefor a machine of the class described, the blank having holes to afi'ordbearings for machine parts and spaced rows of openings, said rows ofopenings being arranged along fold lines for end portions thereof whichconstitute sides of the frame when joined, the blank having a portiondisposed at an angle to said rows to constitute a base for anothermachine part, one end of said portion intersecting the line of one ofsaid rows and the blank having a notch also intersecting said line atthe junction of said portion with the remainder of the blank.

3. A frame for a machine of the class described made from a blank andhaving a body, sides rising from the body having holes therethrough toafl'ord bearings for machine parts, a portion at one edge of the body atan angle to said sides to form a base for a machine part, the framehaving rows of openings along the junction lines of the body and sides,and notches along said lines at the junction of the said portion andsaid body.

in testimony whereof l have hereunto set my hand.

Dr. I HERMANN HOFFMEISTER.

